Http://www.chem4kids.com/files/elem_pertable.html this should help.
Animal fibers are fibers from animals and consist mainly of protein. They contain not only silk fiber from silkworms and fur fiber from sheep wool but also collagen fiber extracted from animal skins, chitin from crustaceans, and shellfish like shrimp and chitosan made by deacetylating chitin.
Answer:
The minimum energy required to eject an electron from sodium will be bigger.
Explanation:
red light has a higher wavelength, that mean that the energy that emitted is lower in comparison with the violet light.
If the rate of the photons is the same, 10,000 photons per second, that means that the required energy to take an electron need to be bigger to have the same effect.
Hope this info is useful.
Answer:
The answer to your question is 43.9 g of NaCl
Explanation:
Data
Grams of NaCl = ?
Volume = 0.75 L
Molarity = 1 M
Number of moles = ?
Formula
Solve for number of moles
Number of moles = Molarity x volume
Substitution
Number of moles = 1 x 0.75
= 0.75
Molecular weight of NaCl = 23 + 35.5 = 58.5
Calculate the grams of NaCl using proportions
58.5 g of NaCl ---------------- 1 mol
x ---------------- 0.75 moles
x = (0.75 x 58.5) / 1
x = 43.9 g of NaCl
